| 年度 | 实际值 |
|---|---|
| 1978 | 165 |
| 1979 | 195 |
| 1980 | 219 |
| 1981 | 286 |
| 1982 | 346 |
| 1983 | 359 |
| 1984 | 446 |
| 1985 | 549 |
| 1986 | 609 |
| 1987 | 725 |
| 1988 | 902 |
| 1989 | 1011 |
| 1990 | 1099 |
| 1991 | 1211 |
| 1992 | 1359 |
| 1993 | 1746 |
| 1994 | 2225 |
| 1995 | 2966 |
| 1996 | 3463 |
| 1997 | 3684 |
| 1998 | 3815 |
| 1999 | 3948 |
| 2000 | 4254 |
| 2001 | 4582 |
| 2002 | 4940 |
| 2003 | 5431 |
| 2004 | 6096 |
| 2005 | 6660 |
| 2006 | 7335 |
| 2007 | 8265 |
| 2008 | 9258 |
| 2009 | 10007 |
| 2010 | 11303 |
| 2011 | 13071 |
| 2012 | 14552 |
| 2013 | 17494 |
| 2014 | 19373 |
| 2015 | 21125 |